• 蝶阀结构形式分为偏置板式垂直板式板式杠杆式

    Butterfly valve according to the structure of the form of bias can be divided into the plate, vertical plate, inclined plate and leveraged.

    youdao

  • 蝶阀结构形式分为偏置板式垂直板式板式杠杆式

    Butterfly valve according to the structure of the form of bias can be divided into the plate, vertical plate, inclined plate and leveraged.

    youdao

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